diff --git a/modules/openapi-generator/src/main/resources/csharp/api.mustache b/modules/openapi-generator/src/main/resources/csharp/api.mustache
index 4f0a06f234e..cdbb940d3f5 100644
--- a/modules/openapi-generator/src/main/resources/csharp/api.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp/api.mustache
@@ -93,6 +93,17 @@ namespace {{packageName}}.{{apiPackage}}
             ExceptionFactory = {{packageName}}.Client.Configuration.DefaultExceptionFactory;
         }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="{{classname}}"/> class
+        /// </summary>
+        /// <returns></returns>
+        public {{classname}}()
+        {
+            this.Configuration = {{packageName}}.Client.Configuration.Default;
+
+            ExceptionFactory = {{packageName}}.Client.Configuration.DefaultExceptionFactory;
+        }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="{{classname}}"/> class
         /// using Configuration object